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Tag Archives: fiber
A Little Specification Reading Before Bed
Nothing like reading ITU optical specifications to help you get to sleep after an active day. Since I have been doing some work on dispersion, let's pull up ITU G.695 - Characteristics of Optical Systems. I want to see if the work published in my previous blog posts on dispersion are consistent with what is contained in an industry standard. This will be a fairly brief post, but it will pull together the information from several previous posts. Continue reading
Posted in Fiber Optics
Tagged fiber, optics, power penalty
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Magic Number Analysis – Converting Spectral Width to Sigma
Introduction Engineering seems to have a lot of "magic numbers" – numbers used in equations with no explanations of where they come from. I REALLY do not like magic numbers because years from now some other engineer will be staring … Continue reading
Dispersion Power Penalty Modeling (Part 3)
Deriving Equation 2 Equation 2 is derived from Equation 7 by noting the following items. A true normal pulse has infinite length, so we cannot have a high speed data system that sends true normal pulses. A common choice is … Continue reading
Dispersion Power Penalty Modeling (Part 2)
Modeling Pulse Distortion Choice of Pulse Basis Function As with most modeling problems, it is very important to choose a function that accurately represents your physical signal. The most commonly used pulse models in optics are based on the normal … Continue reading
Dispersion Power Penalty Modeling (Part 1)
An Apology This blog post is rather long (3 parts). I have had so many questions on this topic lately that I thought I should put some of the notes into a more formal format. The discussion is very specific … Continue reading